Silhouette of a woman by the sea at dusk

Meet ZAE

Meet ZAE

Your Body.
One System.
Every Rhythm.

Your Body.
One System.
Every Rhythm.

The first Universal Hormonal Intelligence OS. ZAE aligns with your natural rhythms and adapts to your body.

The first Universal Hormonal Intelligence OS. ZAE aligns with your natural rhythms and adapts to your body.

For the first time an app told me why I felt off before I could put it into words. It knew my rhythm before I did.

Léa Morin

34, product designer

The Vision

ZAE is the only platform that serves all the biological life stages, from first cycle to menopause and every phase in between.

The System

Real-time adaptation. Circadian sync. State-adaptive guidance. Your daily recommendations shift as your body does.

The Scanner

Hi-Scanner reads your skin,
your supplements and your food.
ZAE turns them into decisions.

The Proof

ZAE is not a tracker.
It is an operating system
for the body.

Clinical studies analyzed

450

Clinical studies analyzed

450

Clinical studies analyzed

450

Every recommendation ZAE makes is grounded in peer-reviewed science. Not trends, not guesses, but 485 clinical studies distilled into guidance you can act on today.

✓ Real-time adaptation

✓ Circadian sync

✓ State-adaptive

✓ Evidence-based

✓ Real-time adaptation

✓ Circadian sync

✓ State-adaptive

✓ Evidence-based

Every recommendation ZAE makes is grounded in peer-reviewed science. Not trends, not guesses, but 485 clinical studies distilled into guidance you can act on today.

✓ Real-time adaptation

✓ Circadian sync

✓ State-adaptive

✓ Evidence-based

First cycle, fertility, pregnancy, perimenopause, menopause. Most apps pick one. ZAE is built to understand the full arc of a life, and to move with you between stages.

✓ Cycle & fertility

✓ Pregnancy & postpartum

✓ Perimenopause

✓ Menopause & beyond

✓ Cycle & fertility

✓ Pregnancy & postpartum

✓ Perimenopause

✓ Menopause & beyond

First cycle, fertility, pregnancy, perimenopause, menopause. Most apps pick one. ZAE is built to understand the full arc of a life, and to move with you between stages.

✓ Cycle & fertility

✓ Pregnancy & postpartum

✓ Perimenopause

✓ Menopause & beyond

Food, beauty, household and clothing. Hi-Scanner reads the products around you and tells you what works for your hormones right now, and what quietly works against them.

✓ Food & supplements

✓ Skincare & beauty

✓ Household products

✓ Clothing & fabrics

✓ Food & supplements

✓ Skincare & beauty

✓ Household products

✓ Clothing & fabrics

Food, beauty, household and clothing. Hi-Scanner reads the products around you and tells you what works for your hormones right now, and what quietly works against them.

✓ Food & supplements

✓ Skincare & beauty

✓ Household products

✓ Clothing & fabrics

Your body doesn’t run on a weekly plan. It runs on rhythms. ZAE re-calibrates around the clock so the guidance you get at 7 AM is not the guidance you get at 9 PM.

✓ Morning to night sync

✓ AI daily suggestions

✓ Wearable ready

✓ Private by design

✓ Morning to night sync

✓ AI daily suggestions

✓ Wearable ready

✓ Private by design

Your body doesn’t run on a weekly plan. It runs on rhythms. ZAE re-calibrates around the clock so the guidance you get at 7 AM is not the guidance you get at 9 PM.

✓ Morning to night sync

✓ AI daily suggestions

✓ Wearable ready

✓ Private by design

Why ZAE

One system. Every rhythm.

ZAE is a Hormonal Intelligence platform that reshapes itself around who you are today. Your phase, your energy, your environment. Guidance that fits your body instead of asking your body to fit a plan.

0 day

Starts adapting

0 K+

Data points a day

0 K+

Data points a day

0

Life stages

0-bit

HIPAA encryption

Woman in a gym

A RESPONSIVE EXPERIENCE

One interface. Different biological states.

ZAE shifts its energy with you. Cycle phase, life-stage, and daily circadian rhythm each get their own visual language—so your screen feels immediately relevant.

Follicular — turquoise clarity

Menstrual

Ovulation

Luteal

What users say

Finally
Understood

Thousands of women. One shared feeling:
my body finally makes sense.

What users say

Finally
Understood

Thousands of women. One shared feeling:
my body finally makes sense.

  • woman in black long sleeve shirt

    For the first time, my workouts actually match my cycle. I stopped fighting my body on low-energy days.

    Gina A.

    34 · Cycle sync · Online

  • man in black hoodie standing

    ZAE didn’t give me a plan. It gave me a system that changes with me every single week.

    Jamie R.

    41 · Perimenopause · New York

  • smiling woman sitting on grass during daytime

    Through every trimester, ZAE knew exactly where I was and adjusted my guidance before I even asked.

    Priya S.

    29 · Pregnancy · London

  • a man with a beard

    The Hi-Scanner showed me what was in products I’d used for years. I swapped half my bathroom shelf.

    Rachel C.

    52 · Hi-Scanner user · Dubai

  • a woman in a black top is sitting down

    Postpartum felt chaotic until ZAE started syncing with my sleep and breastfeeding. It met me where I was.

    Lisa B.

    38 · Postpartum · Sydney

  • woman in white collared shirt looking at the city during night time

    Knowing my health data is encrypted and stays mine made it easy to finally trust an app with everything.

    Emma V.

    31 · Daily user · Berlin

  • woman in black long sleeve shirt

    For the first time, my workouts actually match my cycle. I stopped fighting my body on low-energy days.

    Gina A.

    34 · Cycle sync · Online

  • man in black hoodie standing

    ZAE didn’t give me a plan. It gave me a system that changes with me every single week.

    Jamie R.

    41 · Perimenopause · New York

  • smiling woman sitting on grass during daytime

    Through every trimester, ZAE knew exactly where I was and adjusted my guidance before I even asked.

    Priya S.

    29 · Pregnancy · London

  • a man with a beard

    The Hi-Scanner showed me what was in products I’d used for years. I swapped half my bathroom shelf.

    Rachel C.

    52 · Hi-Scanner user · Dubai

  • a woman in a black top is sitting down

    Postpartum felt chaotic until ZAE started syncing with my sleep and breastfeeding. It met me where I was.

    Lisa B.

    38 · Postpartum · Sydney

  • woman in white collared shirt looking at the city during night time

    Knowing my health data is encrypted and stays mine made it easy to finally trust an app with everything.

    Emma V.

    31 · Daily user · Berlin

User results

What users are achieving with ZAE.

Real people, real rhythms. Here is what changed once their day started following their body.

Real people, real rhythms. Here is what changed once their day started following their body.

Sarah K.

—

34

I finally know why I crash in the second half of my cycle. ZAE plans around it now.

Focus:

Cycle sync

Result:

Energy back

With ZAE:

8 weeks

Sarah K. portrait

Sarah K.

—

34

Focus:

Cycle sync

Result:

Energy back

With ZAE:

8 weeks

Sarah K. portrait

Marta B.

—

41

Night sweats down, sleep up. The circadian sync alone was worth it.

Focus:

Perimenopause

Result:

Sleep restored

With ZAE:

12 weeks

Marta B. portrait

Marta B.

—

41

Focus:

Perimenopause

Result:

Sleep restored

With ZAE:

12 weeks

Marta B. portrait

Priya S.

—

29

Hi-Scanner flagged three skincare products I used daily. Swapped them, and my cycle settled.

Focus:

Fertility

Result:

Cycle regular

With ZAE:

5 months

Priya S. portrait

Priya S.

—

29

Focus:

Fertility

Result:

Cycle regular

With ZAE:

5 months

Priya S. portrait

Daniela F.

—

52

I thought this phase was just something to survive. ZAE made it something to understand.

Focus:

Menopause

Result:

Mood steady

With ZAE:

16 weeks

Daniela F. portrait

Daniela F.

—

52

Focus:

Menopause

Result:

Mood steady

With ZAE:

16 weeks

Daniela F. portrait

Nadia O.

—

31

After my baby I had no idea what my body was doing. ZAE gave me a map.

Focus:

Postpartum

Result:

Rhythm rebuilt

With ZAE:

6 weeks

Nadia O. portrait

Nadia O.

—

31

Focus:

Postpartum

Result:

Rhythm rebuilt

With ZAE:

6 weeks

Nadia O. portrait

Elena M.

—

45

The suggestions change with me. That is the first time an app ever kept up.

Focus:

Daily AI plan

Result:

Consistent at last

With ZAE:

10 months

Elena M. portrait

Elena M.

—

45

Focus:

Daily AI plan

Result:

Consistent at last

With ZAE:

10 months

Elena M. portrait

How it works

Four steps. Zero guesswork.

From download to a day that finally fits, ZAE does the heavy lifting.

01
01

Download ZAE

Available on iPhone and Android.

Set up takes two minutes. Tell ZAE where you are in life and what matters to you.

Sync your rhythm

ZAE maps your cycle, sleep and circadian rhythm to build a live picture of your hormonal state, updated every day.

Scan your world

Point Hi-Scanner at food, skincare, supplements or clothing. Get an instant read on what supports your body right now.

Live in sync

Receive AI suggestions that adjust as you do. Less second-guessing, more days that feel like yours.

Plans

Start free.
Go deeper when ready.

Two plans. One system that grows with you.

Person using the ZAE app

Free

Forever

Everything you need to start living in sync with your body.

$

0

per month

Cycle & rhythm tracking

Daily hormonal state

Core AI suggestions

5 Hi-Scanner scans a month

Person using the ZAE app

Free

Forever

Everything you need to start living in sync with your body.

$

0

per month

Cycle & rhythm tracking

Daily hormonal state

Core AI suggestions

5 Hi-Scanner scans a month

Hand holding a phone with the ZAE app

Premium

Monthly

Most popular

The full operating system for your body, with unlimited scanning.

$

14.99

per month

Everything in Free

Unlimited Hi-Scanner

Adaptive AI plans, all day

Wearable & circadian sync

Life-stage transitions support

Hand holding a phone with the ZAE app

Premium

Monthly

Most popular

The full operating system for your body, with unlimited scanning.

$

14.99

per month

Everything in Free

Unlimited Hi-Scanner

Adaptive AI plans, all day

Wearable & circadian sync

Life-stage transitions support

Woman looking at her phone

Amara K.

41, perimenopause

I stopped fighting my body. ZAE told me when to push and when to rest, and it was right.

Woman looking at her phone

Amara K.

41, perimenopause

I stopped fighting my body. ZAE told me when to push and when to rest, and it was right.

FAQ

Questions, answered.

What people ask before they download ZAE.

Profile photo

Can’t find your answer?

Our team reads every message. Ask us anything about ZAE, your data, or how it fits your life stage.

01

What exactly is ZAE?

ZAE is a Universal Hormonal Intelligence OS. It reads your cycle, sleep and circadian rhythm, then adapts your daily recommendations to the state your body is in today.

01

What exactly is ZAE?

ZAE is a Universal Hormonal Intelligence OS. It reads your cycle, sleep and circadian rhythm, then adapts your daily recommendations to the state your body is in today.

01

What exactly is ZAE?

ZAE is a Universal Hormonal Intelligence OS. It reads your cycle, sleep and circadian rhythm, then adapts your daily recommendations to the state your body is in today.

02

How is ZAE different from a cycle tracker?

02

How is ZAE different from a cycle tracker?

02

How is ZAE different from a cycle tracker?

03

Which life stages does ZAE support?

03

Which life stages does ZAE support?

03

Which life stages does ZAE support?

04

What is Hi-Scanner?

04

What is Hi-Scanner?

04

What is Hi-Scanner?

05

Does ZAE work with my wearable?

05

Does ZAE work with my wearable?

05

Does ZAE work with my wearable?

06

Is my data private?

06

Is my data private?

06

Is my data private?

07

Is ZAE free?

07

Is ZAE free?

07

Is ZAE free?

08

Is ZAE backed by science?

08

Is ZAE backed by science?

08

Is ZAE backed by science?

Profile photo

Can’t find your answer?

Our team reads every message. Ask us anything about ZAE, your data, or how it fits your life stage.

Featured in

The story behind ZAE.

Interviews and features on Nina Graffe and the hormonal intelligence OS she built.

Bold Journey

Meet Nina Graffe

Nina Graffe with ZAE app screens

Bold Journey

Meet Nina Graffe

Nina Graffe with ZAE app screens

Bold Journey

Meet Nina Graffe

Nina Graffe with ZAE app screens

Wesley Insider

Building a hormonal intelligence platform from Nashville

Wesley Insider feature on Nina Graffe and ZAE

Wesley Insider

Building a hormonal intelligence platform from Nashville

Wesley Insider feature on Nina Graffe and ZAE

Wesley Insider

Building a hormonal intelligence platform from Nashville

Wesley Insider feature on Nina Graffe and ZAE

Influential Women

Ten minutes with Nina Graffe

Nina Graffe on Influential Women

Influential Women

Ten minutes with Nina Graffe

Nina Graffe on Influential Women

Influential Women

Ten minutes with Nina Graffe

Nina Graffe on Influential Women
ZAE app adapting its interface to each cycle phase
ZAE app adapting its interface to each cycle phase

Journal

The ZAE journal.

Hormonal science, explained in plain language.

“Organic” till you scan it

Oct 20, 2026

Scanner

“Organic” till you scan it

A product can look clean, natural, even say it’s “Organic,” and still contain ingredients that affect your hormones.

The front of the package is marketing. The ingredient list is the part that matters.

Why ingredients matter

Some oils, sweeteners, additives, dyes, and packaging chemicals can hurt your gut, cause inflammation, or make energy and cravings feel harder to manage.

That effect is not the same in every body. Pregnancy, luteal weeks, perimenopause, and high-stress phases can make the same ingredient have a different effect.

The problem with generic scanners

Generic food scanners treat every body the same by giving every person the same score.

ZAE scores every ingredient against your current hormonal phase and life stage, so “good for someone else” might not be “good for you today.” Scan the barcode or the label. ZAE lets you know how that food sits with your hormones today, not with a generic chart.

The label is the start

Your biology is the verdict.

What’s one food you assumed was fine until you read the ingredients?

“Organic” till you scan it

Oct 20, 2026

Scanner

“Organic” till you scan it

A product can look clean, natural, even say it’s “Organic,” and still contain ingredients that affect your hormones.

The front of the package is marketing. The ingredient list is the part that matters.

Why ingredients matter

Some oils, sweeteners, additives, dyes, and packaging chemicals can hurt your gut, cause inflammation, or make energy and cravings feel harder to manage.

That effect is not the same in every body. Pregnancy, luteal weeks, perimenopause, and high-stress phases can make the same ingredient have a different effect.

The problem with generic scanners

Generic food scanners treat every body the same by giving every person the same score.

ZAE scores every ingredient against your current hormonal phase and life stage, so “good for someone else” might not be “good for you today.” Scan the barcode or the label. ZAE lets you know how that food sits with your hormones today, not with a generic chart.

The label is the start

Your biology is the verdict.

What’s one food you assumed was fine until you read the ingredients?

Your testosterone responds to your lifestyle

Oct 13, 2026

Men’s Health

Your testosterone responds to your lifestyle

Testosterone can decline with age, often starting in the 30s or 40s. What many men don’t know is this: sleep, stress, body composition, and training strongly influence how steep that change feels.

When the morning peak flattens

When sleep is short, stress stays high, or recovery is ignored, the morning testosterone peak can flatten. Energy drops. Motivation gets quieter. Recovery slows. That is often written off as “just getting older,” even when lifestyle is part of the picture.

This is not a one-way story

Better sleep, smarter training, steadier nutrition, and lower chronic stress can support healthier testosterone and make daily energy feel more stable.

You can’t freeze time, but you can work with your rhythm.

How ZAE helps

ZAE syncs with your circadian rhythm and tracks your sleep, recovery, and energy. Then it adjusts nutrition, movement, and recovery suggestions to your life stage, so supporting your hormones feels clearer instead of like guesswork.

Your testosterone responds to your daily choices. What’s one habit that helps your energy stay steadier?

Your testosterone responds to your lifestyle

Oct 13, 2026

Men’s Health

Your testosterone responds to your lifestyle

Testosterone can decline with age, often starting in the 30s or 40s. What many men don’t know is this: sleep, stress, body composition, and training strongly influence how steep that change feels.

When the morning peak flattens

When sleep is short, stress stays high, or recovery is ignored, the morning testosterone peak can flatten. Energy drops. Motivation gets quieter. Recovery slows. That is often written off as “just getting older,” even when lifestyle is part of the picture.

This is not a one-way story

Better sleep, smarter training, steadier nutrition, and lower chronic stress can support healthier testosterone and make daily energy feel more stable.

You can’t freeze time, but you can work with your rhythm.

How ZAE helps

ZAE syncs with your circadian rhythm and tracks your sleep, recovery, and energy. Then it adjusts nutrition, movement, and recovery suggestions to your life stage, so supporting your hormones feels clearer instead of like guesswork.

Your testosterone responds to your daily choices. What’s one habit that helps your energy stay steadier?

Your hormones started following a new script

Oct 6, 2026

Menopause

Your hormones started following a new script

Perimenopause is the transition leading up to menopause. It can start in your late 30s or 40s and often lasts several years. During this time, your ovaries become less consistent. Estrogen and progesterone no longer rise and fall in a steady, predictable pattern. They begin to fluctuate more irregularly.

Why the symptoms appear

This is why so many symptoms can appear that don’t feel like “just stress” or “just getting older”: irregular cycles, brain fog, mood shifts, sleep disruption, sudden fatigue, anxiety, hot flashes, joint aches, or changes in libido.

The fluctuations can feel random because they are. Estrogen can swing higher or lower than expected, and progesterone often becomes less reliable. One week energy is high, the next it drops. Sleep becomes lighter. Focus starts to slip. These shifts are biological, not a personal failure.

How ZAE helps

ZAE was built to recognize these patterns. It tracks how your symptoms, energy, sleep, and cycle are shifting together, then adjusts guidance, nutrition suggestions, and recovery recommendations based on where your body actually is, not where a standard cycle chart says you should be.

That doesn’t mean something is wrong with you. It means your body is in a new phase.

Have you noticed symptoms that feel connected to this transition?

Your hormones started following a new script

Oct 6, 2026

Menopause

Your hormones started following a new script

Perimenopause is the transition leading up to menopause. It can start in your late 30s or 40s and often lasts several years. During this time, your ovaries become less consistent. Estrogen and progesterone no longer rise and fall in a steady, predictable pattern. They begin to fluctuate more irregularly.

Why the symptoms appear

This is why so many symptoms can appear that don’t feel like “just stress” or “just getting older”: irregular cycles, brain fog, mood shifts, sleep disruption, sudden fatigue, anxiety, hot flashes, joint aches, or changes in libido.

The fluctuations can feel random because they are. Estrogen can swing higher or lower than expected, and progesterone often becomes less reliable. One week energy is high, the next it drops. Sleep becomes lighter. Focus starts to slip. These shifts are biological, not a personal failure.

How ZAE helps

ZAE was built to recognize these patterns. It tracks how your symptoms, energy, sleep, and cycle are shifting together, then adjusts guidance, nutrition suggestions, and recovery recommendations based on where your body actually is, not where a standard cycle chart says you should be.

That doesn’t mean something is wrong with you. It means your body is in a new phase.

Have you noticed symptoms that feel connected to this transition?

“Organic” till you scan it

Oct 20, 2026

Scanner

“Organic” till you scan it

A product can look clean, natural, even say it’s “Organic,” and still contain ingredients that affect your hormones.

The front of the package is marketing. The ingredient list is the part that matters.

Why ingredients matter

Some oils, sweeteners, additives, dyes, and packaging chemicals can hurt your gut, cause inflammation, or make energy and cravings feel harder to manage.

That effect is not the same in every body. Pregnancy, luteal weeks, perimenopause, and high-stress phases can make the same ingredient have a different effect.

The problem with generic scanners

Generic food scanners treat every body the same by giving every person the same score.

ZAE scores every ingredient against your current hormonal phase and life stage, so “good for someone else” might not be “good for you today.” Scan the barcode or the label. ZAE lets you know how that food sits with your hormones today, not with a generic chart.

The label is the start

Your biology is the verdict.

What’s one food you assumed was fine until you read the ingredients?

Your testosterone responds to your lifestyle

Oct 13, 2026

Men’s Health

Your testosterone responds to your lifestyle

Testosterone can decline with age, often starting in the 30s or 40s. What many men don’t know is this: sleep, stress, body composition, and training strongly influence how steep that change feels.

When the morning peak flattens

When sleep is short, stress stays high, or recovery is ignored, the morning testosterone peak can flatten. Energy drops. Motivation gets quieter. Recovery slows. That is often written off as “just getting older,” even when lifestyle is part of the picture.

This is not a one-way story

Better sleep, smarter training, steadier nutrition, and lower chronic stress can support healthier testosterone and make daily energy feel more stable.

You can’t freeze time, but you can work with your rhythm.

How ZAE helps

ZAE syncs with your circadian rhythm and tracks your sleep, recovery, and energy. Then it adjusts nutrition, movement, and recovery suggestions to your life stage, so supporting your hormones feels clearer instead of like guesswork.

Your testosterone responds to your daily choices. What’s one habit that helps your energy stay steadier?

Research, rhythms and what they mean for your everyday.

Woman holding a phone

Nadia R.

29, first-time mother

Pregnancy, postpartum, back to cycling. ZAE followed me through all of it without missing a beat.

Woman holding a phone

Nadia R.

29, first-time mother

Pregnancy, postpartum, back to cycling. ZAE followed me through all of it without missing a beat.

  • One system · Every rhythm · Real-time adaptation · Circadian sync · Not a tracker · An OS for the body ·

  • One system · Every rhythm · Real-time adaptation · Circadian sync · Not a tracker · An OS for the body ·